package main

import . "fmt"

// 解説読んだ

func main() {
	var n,a,b,x,y int
	Scan(&n,&a,&b,&x,&y)
	r := y*b
	hs := make([]int, n)
	for i := range hs {
		Scan(&hs[i])
		if r >= hs[i] {
			r -= hs[i]
			continue
		}
		for r < hs[i] {
			if a == 0 {
				Println("No")
				return
			}
			p := i
			for j := 0; j < i; j++ {
				if hs[j] > hs[p] {
					p = j
				}
			}
			if hs[p] == 0 {
				Println("No")
				return
			}
			a--
			r += min(hs[p], x)
			hs[p] = max(0, hs[p] - x)
		}		
	}
	Println("Yes")
}